| 摘要 |
PROBLEM TO BE SOLVED: To enable to enhance vibration characteristics, while lengthening the life of a brush 12 and the life of a commutator 11. SOLUTION: By constituting a unit of a current contact means of the brusher 12 that constitutes a current contact means of the brush 12 with a bent contact section 12b and a contact plate, a brush is enabled to prevent the occurrence of an unnecessary fray an the commutator 11 compensating defects of each with a mutual action as well as to obtain stabilized contact over a wide rotating range from a low to high rotation.
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